So, how did Pluto's orbit end up this way? First, let's compare Pluto to Earth and other planets in the solar system. The dwarf planet's orbit has an eccentricity — how much it deviates from a perfect ...

For almost a decade, astronomers have been searching for a ninth planet in the solar system. Recently, new evidence of ...

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A researcher has used advanced models that indicate that the formation of Pluto and Charon may parallel that of the Earth-Moon system. Both systems include a moon that is a large fraction of the size ...

If a passing star came near the solar system, Earth would probably be fine – but there is a small chance our entire world could get thrown to the outer reaches of the solar system, crash into another ...

As the quote goes, “Born too late to explore earth, born too early to explore space.” It’s true: Barring some monumental development, our kind is destined to live the rest of our lives on Earth, ...

Astronomers using the James Webb Space Telescope have peered into a mysterious blue haze cloaking the surface of Pluto — and discovered that it’s controlling the dwarf planet’s climate and atmosphere.

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NASA's New Horizons probe flew by Pluto nearly eight years ago, but the epic encounter is still bearing scientific fruit. New Horizons gave humanity its first up-close looks at Pluto on July 14, 2015, ...